Extractor



Dec. 5, 1939. E. L. MILLER 2,182,346

EXTRACTOR Filed March 2, 1937 2 Sheets-Sheet 1 .2 gr Z EDWARD LMLLER 7 Dec. 5, 1939. v E. MILLER 2,182,346

EXTRACTOR Filed March 2, 1937 2 Sheets-Sheet 2 I [WEI-11017 6 EDWARD L.M1LLEF1 Affurney.

Patented Dec. 5, 1939 EXTRACTOB Edward L. Miller, Moline, 111., assignor to American Machine and Metals, Inc., New York,- N. Y., a corporation of Delaware Application March 2, 1937, Serial No. 128,590

Claims.

This invention relates to that form of extractor having a'fioating curb in which the extractor is supported from several points attached to the curb. While I have chosen to illustrate it as a 5 laundry extractor and shall so refer to it, it will be understood that this is for convenience only and the invention may be embodied in any type of centrifugal machine.

It is an object of this invention to provide a new and improved supporting frame from which the extractor may be suspended which will provide the necessary strength and rigidity and at the same time will occupy a minimum of floor space and which will require a minimum of labor to install.

The weight of a laundry extractor mayrun up as high as 4500 pounds and it is rotated at high speeds so that during operation the device may be caused to vibrate or oscillate 800 to 1200 times per 29 minute.

These forces combine to impose a very heavy lateral strain on the supports.v This makes'the adequate design of such a frame very difficult.

For practical reasons it is desirable to have the extractor occupy as little floor space as possible and the operator must have access to as much of the periphery of the extractor as possible. Moreover, while the supporting posts must be firmly braced together to withstand theheavy lateral extractor be kept as low as possible to facilitate loading and unloading. It has therefore been a problem to get the necessary bracing effect between the posts within these requirements.

It is an object of this invention to provide an extractor of the character described in which these dimculti'es are overcome with a minimum of expense.

40 tures of construction, combination of elements,

strains, it is also necessary that the top of the v The invention accordingly comprises the fea- Figure 3 is a section on the line III-III of Figure 2.

Figure 4 is a section from the point of view of the line IVIV of Figure 3, but with the extractor supports in place. A 5

Figures 5, 6 and 7 show alternative construction of the post. Figures 5 and 6 being fromthe point of view of 3 and 4 respectively and Figure '7 being a top plan view of the posts.

In accordance with this invention there is 10 formed a fiat frame preferably triangular in shape comprising three members, I, 2 and 3, each, channel shaped in cross section, cut and welded together along lines 4, 5 and B to form the triangular shaped frame as illustrated. This frame has 15 a downwardly extending flange I completely surrounding its periphery which may be accomplished either by bendingthe metal of the web of the channel downwardly or by welding a separate piece to the periphery of the frame, to close the open ends, which would otherwise be open.

Mounted on each corner of the base is a hollow post 8, 8a. and 8b, having'its lower-end firmly welded to the base, astraddle-of the welded joints 4, 5 and 6, so that the posts themselves serve to strengthen and brace the corners of the frame. Each post, in the form shown in Figures 1 to 4, v comprises a fiat plate bent along converging lines 9, H), H and 12 to form into a hollow pyramidal shape. The post, however, has a flat vertical face toward the center of the triangular base. This fiat face is closed on its lower portion by a plate l3 leaving an opening I4 above it for the reception of the extractor supporting members.

At the top of the base 8 there is provided a shelf 3 I5 which may be a plate welded to the top of the post 8. This shelf has an opening I! through it for the reception of a flexible connection l8, which may be of the form shown in application 69056, filed March 16,1936. This flexible connection is 40 attached to a plate l6 by nuts 20. The other end of the flexible connection I8 is connected by nuts 2| with a suspension lug 22 on the extractor curb 23.

It will be noted that in the form illustrated two of the posts 8a and 8b are spaced from the third post 8 much further than these two posts are spaced from each other and there is mounted upon the extractor curb 23 a drive motor 25 adapted to drive the extractor through the medium of a belt 26. This motor is supported from the extractor by bracket 21 and is mounted upon the frame in such a manner that the bracket 21 and motor 25 extend between the two closely adjacent posts 8a and 81) so that the weight of the posts.

cut edges a flat plate 3| to close the open side of the pipe except for an opening 32 for the reception of the flexible connection and the sus-' pension lug as above described. This post, so formed, is firmly welded to the base and additional bracing members 33 may be welded to it and to the base to assist in withstanding the strains.

In this figure also there is shown a slight modification of a manner of attaching the. flexible member to the shelf which is shown as comprisingthe provision of an upwardly projecting sleeve 34 upon-the shelf 35 and providing upon the upper end of the flexible member a stud 36 having a threaded end to engage a thread upon the inside of the sleeve.

In either of the constructions shown herein, there is obtained the maximum of rigidity with the minimum floor space and at the same time ,the top of the extractor is kept at as low a level as practical.

Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said'to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is: I

1. A frame for a centrifugal dryer comprising three substantially straight members, one being shorter than the other two, said-members being welded together at comers to form/a tri'angular base, a post at each of said corners, each post comprising a sheet bentto a generally semiconical form having a diametrical sidefacing inwardly and having its bottom straddling across the joint of the two members meeting at the corner and welded to each of them, supports welded to the top of the said sheet for supporting the curb of an extractor and means for connecting the curb to said supports for carrying the curb from each of said suppOrts.

2. A device in accordance with claim 1 in which a plate is welded to 'the' open interior edges of said sheetto close, the post below the curb carrying means. y

3. A frame for-afcentrifugal dryer comprising three substantially straight channel shaped members arranged in a triangular form and welded together at the corners to form a base, a post at each corner comprising a plate bent along upwardly converging lines to form a pyramid-open at the side toward the center, each of said posts straddling the joint between said channelshaped, members at its corner and being welded to both, supports welded to the top of said sheet for supporting the curb of the machine andmeans for connecting the curb to said supports for carrying the curb from each of said supports.

4. A device in accordance with claim 3 in which a plate is welded to the open interior edges of said sheet to close the post below the curb carrying means.

5. A device in accordance with claim 3 in which one of the straight members is shorter than the other two and having a curb and rotary drum supported by the curb carrying means at substantially the center of its height and having a motor for driving said drumsupported from said curb between the posts which are closest together by reason of said short member.

EDWARD-L. MILLER. 

